Loop backer



FIG. 1 is a rear perspective view of a loop backer showing our new design;

FIG. 2 is a left side view thereof, the right side being a mirror image of the left side;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a top view thereof, the bottom being a mirror image of the top.

The broken lines represent portions of the structure that forms no part of the claim. 

CLAIM The ornamental design for a loop backer, as shown and described. 